Rhode Island Department of Education
Lesson Plan

Lesson Title: Mutations- Radiated Radishes - Inquiry Lab

State Standards:

LS1 (Ext) - 1
Students demonstrate understanding of structure and function-survival requirements by
1aa describing how the malfunction of cell organelles can lead to disease (e.g. “leaky” lysosomes and rheumatoid arthritis)
LS1 (9-11) - 2
Students demonstrate an understanding of the molecular basis for heredity by …
2b explaining how DNA may be altered and how this affects genes/heredity (e.g. substitution, insertion, or deletion)

Context of Lesson:

This is a lab pertaining to mutation through the radiation of radishes. Inquiry lab to follow up mutation material in the Genetics unit. Students monitor radish growth and draw conclusions on what radiation did to the plant, and present their data to the rest of the class.

Prerequisite Knowledge

Students must have outlined the different types of genetic and chromosomal mutations

Materials

radish seeds - radiated
UV lights
potting material (soil, pots)

Objectives:

Students will be able to observe mutation in a radish.
Students will be able to create their own experiment to study mutations.
Students will be able to analyze qualitative and quantitative data to make assumptions about radiation.

Instruction:

Opening:

What do you know about radiation? As a class we will build a concept map on the board. Where can you be subject to radiation? What do we think it can do to the body?

Engagement:

Students in their lab groups of four will receive radiated radish seeds in quantities of 50, 150 and 500. They will choose a different variable to measure characteristic of plant development, i.e. height, leaves, color, and a method of studying the change in the plant over time to determine what radiation does to the plant and vegetable. The students will then have to write up a conclusion answering the following questions:
What Happened? Determine by analyzing your qualitative and quantitative data collected by each group member. Connect data to background information to reinforce theory.
Assess how this study affects our world
Finally, propose what the radiation did to the radish, and what could be done as a follow up. How can this information be applied to real world medical situations?

Closure:

Students present their theories to the rest of the class with at least two types of media ( drawings/diagrams, words...) and propose a follow up experiment to further their knowledge on mutations.

Assessment:

Students will be graded on their methods, conclusions and presentations.